The world of acoustics and psychoacoustics is quite amazing.
How you percieve audio, music, sounds is very much tied in with your surroundings (speaker placement, shape of the room, listening position) but also with your expections.
Sometimes that’s a hard one for people to realize and perhaps even more so if you just spent 500€ on a 1,2m cable and “clearly heard a difference”. Well who wouldn’t?

But in this BBC documentary you can actually see and hear one of these expectations in action. It’s called the McGurk-effect.
Check it out while you can!The McGurk-effect on YouTube